i dont think chemiclean is going to help , i mean you did it once right and look what your left with.
have you looked into dosing h2o2 to your tanks alongside with blackouts, seems to be working for some folks on RC.
personally i would start treating for dinos and forget the chemiclean.
im almost positive your dealing with dinos.
possibly look into adding/dripping kalk or limewater and getting your ph rasied and stable.
good luck!!
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